Any builder or contractor worth their salt knows about drills and drill bits. The same goes for woodworkers and other enthusiasts of do-it-yourself home improvement projects.
You may benefit from learning the basics of drill bits. It is best if you are starting to create and construct things, whether professionally or not.
Many builders use this tool because “Drill bits create accurate, precise holes in woods, metals, plastics, and other composite materials.”
So, we’ll help you to know one of the drill bit sizes in this article. Let’s get to know the 7/64 drill bit!
What Is A Drill Bit?
It’s best to consider drill bits as specialized cutting instruments for making spherical holes in a wide range of materials. Drills and drill bits are most often used to drill holes in wood.
A cylindrical hole or bore is created in a solid piece of metal using a drill. Plus, it prepares the material for installing a fastener, such as a bolt or a screw.
Drill bit, twist drill, or drill are used to describe the cutting instrument used in drilling. Instead of just referring to the cutting bit, it may also mean the whole instrument.
As said, you may also use these tools to drill other materials, including metal, plastic, composite, and stone.
Need a hole that isn’t circular? Drill bits intended to create various kinds of holes are also available, so you don’t have to be concerned.
There is no one-size-fits-all or universal drill bit. Take note; not all drill bits are created equal.
The best wood drill bits are different from the finest concrete drill bits. A brick drill bit won’t cut it on metal, and vice versa.
What Do The Sizes Of Drill Bits Mean?
The structure’s width or thickness determines the size of a bit. Some tasks will need the use of a precisely sized bit.
Bit sizes vary from 1/16 inch to 1/4 inch and are available in drill bit sets or packs. These are the standard sizes for DIY and small-business projects.
Uses for other sizes include a half-inch, 5/16-inch, 7/16-inch, and an inch and a third-inch.
How Does The 7/64 Drill Bit Work?
The chuck of a drill is where 7/64 drill bits go. Drill torque and cutting speed are generated by the chuck spinning when the drill is turned on.
In addition, the drill chuck securely retains the 7/64 drill bits until the operator removes them. Cutting edges are located at one end of the drill bit and are attached to a shank to be used in a drill chuck.
The sharp edges cut through the material, while the spirals along the length of the bit clear away waste and help keep the bit straight. You may use it on various materials, including wood, metal, plastic, and others.
Common Features of 7/64 Drill Bit
Drill bits are manufactured in various sizes and shapes, but all have certain characteristics. Having a thorough understanding of the project’s components can assist you while making purchases for it.
Your drill bit’s shank is shown here. It may make drilling points in a plethora of ways. It considers words like screw point, conventional point, and split point. Nevertheless, the drill point angle is the most critical.
In addition, the most common point angles are 90 degrees for rapid cutting, 118 degrees for basic drilling, and 135 degrees for boring into hard materials slowly.
This part is exactly in the middle of the hump, to put it another way. This section of the 7/64 drill aids in positioning the drill.
The material is scraped off using the cutting lip. It is the characteristic of the drill that changes the most from one bit to the next.
Flute and Lead
The front section or cutting part of a bit has a recessed or inner groove portion known as flutes. Meanwhile, leads are the bit’s outside face, determining the diameter and ensuring the bit remains on a straight path while drilling.
When it comes to flutes and leads, twist drill bits are by far the most frequent tool you’ll ever use.
It’s the retreating end of a drill bit that goes into the chuck. A drill or hand brace’s chuck is what this is.
Depending on how much torque you require, shanks may be smooth or hex-shaped. As a rule, the shank is shorter than the flute and lead part of the hammer.
It may describe the physical length of a drill bit in this manner. Drill bits are sorted according to their length, which affects how far they may travel.
For recessing operations, common short-shaft bits include Forster bits, which have a poor penetration rate.
Meanwhile, augers used for wood boring and extension bits used to reach recessed areas are two examples of longer shaft bits.
Cut Chisel Edge
The drill tip’s cut chisel has no cutting action and is positioned in the center of the drill tip. However, in the building of the twist drill, it is necessary to connect the two primary cutting blades.
Besides, chisel edge penetration and friction result from cutting through the material with a chisel cut into it. Higher heat production and increased power consumption are side effects of these undesirable drilling characteristics.
The core thickness determines the twist drill’s stability. With a larger (thicker) core diameter, twist drills can easily handle greater torques and tougher materials.
The vibration and lateral force resistance of these bits make them ideal for use in hand drills. Also, the core thickness rises from the drill tip to the shank to make chip removal easier.
When looking for drill bits, you may come across these phrases. As a result, learning the names of the many components of a drill bit and the functions they serve is time well spent.
Also, don’t forget to check out drill purchasing advice. It will help you if you need a drill to go along with your drill bits.
Main Types of 7/64 Metal Drill Bits
Metal is the most common material used to manufacture 7/64 drill bits. There are just a few exceptions to this rule, and metal bits are the best option for almost every surface type. The metal composition is what truly distinguishes the various components.
- High-speed steel (HSS). Metal drill bits are most often made of high-speed steel, alloy steel. Sharpenable HSS bits offer extreme hardness, high resistance, and ease of use.
- In addition to providing strength and resistance, cobalt-alloy steels like HSS (which typically include 5 percent cobalt) also enhance the bit’s hardness. Cobalt’s characteristics are more stable at greater temperatures than titanium’s, allowing for faster drilling.
- Bits made of high-speed steel with a titanium coating are more durable and long-lasting. Even so, it’s important to keep in mind that metal content is expressed as a percentage. Adding a few microns of titanium will have no discernible effect on the final product.
- Tungsten Carbide. Drill bits made of tungsten carbide have greater resilience and toughness. It’s made of an extremely dense alloy of tungsten and carbon. The amount of carbon in this sintered combination determines how hard or soft the resulting metal will be.
What are standard drill bit sizes (metric, fractional inch, and wire gauge)?
Standard sizes of drill bits are readily accessible. It’s critical to be sure the drill bit size you plan to use is compatible with your drill.
As a result, it must fit in the chuck or gripping clamp to provide a tight fit that can resist the pressure of drilling operations.
Drill bits in the 9.53mm and 12.7mm range are the most popular. As a point of reference, drill bit sizes vary from 0.3mm to 16mm for the smallest bits and from 1.6mm to 80mm for the largest bits.
Other drill bit sizes available are:
- 13mm drill bits
- 15mm drill bits
- 18mm drill bits
- 23mm drill bits
- 24mm drill bits
- 26mm drill bits
A drill bit set with sizes ranging from 1/16 inch to 1/4 inch can work for many tasks around the house and workshop. But, certain applications demand a particular size of the drill bit.
Bigger bit sizes like 5/16-inch, 3-8-inch, 7-16″ & 1/2″ may be added if necessary.
1. Standard Metric Drill Bit Sizes
Metric drill bit sizes are defined by this method based on standard metric lengths (such as BS 32*).
Between 0.2 and 0.98 millimeters utilize N 2 to 9:
- N – 0.1 mm. Hence, for N = 2, so it’s 2 – 0.1
- N – 0.1 + 0.02 mm
- N – 0.1 + 0.05 mm
- N – 0.1 + 0.08 mm
When we use N values ranging from 10 to 29, we obtain the following results from 1 to 2.95 mm:
- N – 0.1 mm
- N – 0.1 + 0.05 mm
Using N from 30 to 139, the following values are valid for 3mm through 13.9 mm:
- N – 0.1 mm
For 14 to 25mm and N between 14 and 25mm:
- N – 1 mm
- N – 1 + 0.25 mm
- N – 1 + 0.5 mm
- N – 1 + 0.75 mm
|Drill size||Diameter (in)|
2. Fractional Inch Drill Bit Sizes
|Drill size||Diameter (in)||Diameter (mm)|
|1 1/64 in||1.0156||25.7969|
|1 1/32 in||1.0313||26.1938|
|1 3/64 in||1.0469||26.5906|
|1 1/16 in||1.0625||26.9875|
|1 5/64 in||1.0781||27.3844|
|1 3/32 in||1.0938||27.7813|
|1 7/64 in||1.1094||28.1781|
|1 1/8 in||1.1250||28.5750|
|1 9/64 in||1.1406||28.9719|
|1 5/32 in||1.1563||29.3688|
|1 11/64 in||1.1719||29.7656|
|1 3/16 in||1.1875||30.1625|
|1 13/64 in||1.2031||30.5594|
|1 7/32 in||1.2188||30.9563|
|1 15/64 in||1.2344||31.3531|
|1 1/4 in||1.2500||31.7500|
|1 17/64 in||1.2656||32.1469|
|1 9/32 in||1.2813||32.5438|
|1 19/64 in||1.2969||32.9406|
|1 5/16 in||1.3125||33.3375|
|1 21/64 in||1.3281||33.7344|
|1 11/32 in||1.3438||34.1313|
|1 23/64 in||1.3594||34.5281|
|1 3/8 in||1.3750||34.9250|
|1 25/64 in||1.3906||35.3219|
|1 13/32 in||1.4063||35.7188|
|1 27/64 in||1.4219||36.1156|
|1 7/16 in||1.4375||36.5125|
|1 29/64 in||1.4531||36.9094|
|1 15/32 in||1.4688||37.3063|
|1 31/64 in||1.4844||37.7031|
|1 1/2 in||1.5000||38.1000|
3. Wire Gauge Drill Bit Sizes
|Drill size||Diameter (in)||Diameter (mm)|
How do you choose drill bits by size?
Pilot hole charts that come with drill bits make selecting the correct bit for the job easier. A chart based on the screw’s shank is provided here as a guide only:
- When drilling softwoods, use a bit that is 1/64″ smaller compared to the target hole size to avoid damage.
- When working with other materials, be sure to use a bit that is the same size as the hole.
- If you’re still unsure, go with a drill bit that’s 1/64″ larger than the hole you want to make instead. So, It will consider factors like wood density and screw-type.
It takes time and effort to master the art of selecting the proper drill bit, but don’t let that deter you. To ensure you’re making the right choice, consult your pilot hole charts.
Also, store your drill bits in a container that’s easy to find. As a result, picking the correct size will be a lot simpler and less confusing.
What happens if you don’t have the right size drill bit?
If the threads are not considered, the drill bit should be equal in size to the screw’s shaft. To accomplish this, align the drill bit with a screw. You’re fine to go if they’re the same height and weight.
Most screws and pieces have measurements labeled on them as well.
What size hole to drill for tapping?
Metric threads have a special tapping drill that you may determine by subtracting the pitch from the thread’s diameter. For example, the tapping drill size for an M5x0. 75 thread is 5-0.75mm, or 4.25mm.
Meanwhile, diameter minus pitch determines the tapping drill size for imperial (inch) threads.
What is drilling a pilot hole?
When drilling a hole in building material, you use a pilot hole to check the accuracy of your drill bit. It acts as a guide for a bigger drill, directing it to the proper spot and making the larger drill’s work easier.
Another hole-making instrument, such as a knockout punch, may be inserted to create the final hole size. To avoid damage to the material or breakage of the screw, it locates, guides, and provides space for a self-threading screw in both wood and plastic.
Utilize the 7/64 Drill Bit for your Projects
One of the most frequent jobs that every project work has to deal with is drilling holes. Your material doesn’t matter whether it’s made of concrete or many other types of surface materials.
It’s critical, though, to choose the appropriate drill bit for the task at hand. Choose a drill bit that works with your project. Drill bits have the power to make or destroy a project.
Knowing your materials isn’t enough to pull this off. It’s about becoming familiar with the many kinds of drill bits, their functions, and the materials from which they are made.
You may destroy your base material if you use the incorrect piece. If you use the wrong bits, your job will be slowed or completely halted. We’ve put up this thorough 7/64 drill bit guide to help you avoid running into problems like that.